Safety razor with rolling blade



' Jul 12 1927.

y R. PIRO SAFETY RAZOR WITH ROLLING BLADE Filed Nov. 13. 1923 Fig. 7;

3511 1'10 attozme a Patented July 12, 1927.

PATENT OFFICE.

WAELE 2180, 01! NAPLES, ITALY.

SAFETY RAZOR ROLLING BLADE.

Application filed Iovember 18, 1923, Serial 110. 874,570, and in Italy Iovember 14,1882.

This invention relates to safety razors of the type which are adapted to be adjusted so as 'to compensate for wear of the blade.

The object of ,the present invention is to 6 provide an improved safety razor which is constructed so as to allow of adjustment to compensate for the wearin awa as by grinding of substantially ha f of t e razor lade.

A further object of the invention is to provide an improved construction of safety razor whereby the clamping members for the blade are adapted to be .located in the same position relatively to the-cutting edge of the blade during all conditions of t e vbladewithin the limits of wear allowed for.

A further object of the invention is to provide an improved constructionof safety razor adapted to allow of adjustment for compensating for the wearing away of sub- 7 stantially half the blade which is adapted to be used with blades of the flexible type. With the foregoing and other objects in view, the invention consists in the details of construction, and in the arrangement and combination of parts to be hereinafter more fully set forth and claimed.

In order that the inventionmay be clearly understood reference is made to the accoma0 panying drawings which illustrate by way I of example an embodiment of the invention and in which Fig. 1 is an end elevation of my improved safety razor lookin in the direction of the arrow indicated in ig. 2.

Fig. 2 is a side-elevation of my improved safety razor.

Figs. 3 and 4 are res ectively end and rear elevations of the mem r adapted to clamp the blade in position. 7

7 Figs. 5 and .6 are respectively end and rear elevationsof the serrated guard mem- Figs. 7 and 8 are respectively end and rear views of a member adapted to cooperate with the serrated guard member.

As illustrated in the drawin thesafety razor comprises a hollow hand e1, through which extends an elongated screw threaded to nut 2 having an enlarged end 2, such nut beingadapted to engage the screw threaded pin or the like 3 on the clamping member 4, this construction being substantially the" same asin 'aGillette razor.

The clamping member comprises a substantially narrow head 5 of a width prefer ably half that of the blade to be used with the'holder, the screw threaded in 3 extending from one side thereof and ing located centrally thereof. Also extendin' from such member 5 on the sameside as the screw threaded pin 3 are two In s 6 arranged respectively on opposite si es of the pin 3. Such clam ing member is adapted to clamp the blade to the handle 1 between a'serrated guard 8 and a cooperating member 9, such members and the blade being provided with perforations to accommodate the pin 3 and lugs 6 on the clamping member 4. The perforations in the blade are of circular formation and are of a size to en age with the screw threaded pin 3 and the ulgs 6 without any play whereby when t e clamping member 4 is secured to the handle 1 the blade 7 will/be immovable relatively thereto.

The perforations in the guard member 8 and the cooperating member 9 which are als 10 and 11, are elongated, the elongation beingwin a direction transversely of such mem rs whereby said members prior to the tightenin of the clamping member 4 may be move relatively thereto in a direction transversely of the blade. The guard mem; bar 8 and the cooperatin member 9- are preferably connected toge er so as to re- .vent relative movement therebetween m a direction transversely of the blade by means of In 12 mounted on extensions 13, 13 respectively extending from the two side edges of the member 9,,such lugs 12, 12 being adapted to engage in perforations 14, 14 located in extensions 15, 15 on the. side edges of the guard member 8.

The forward edge of the cooperatin member 9, namely, t e edge coo rating wit indicated respectively by reference numer-,

the cuttinfiledge of the razor b ade 7 is provided att eends thereof with two extensions 16, 16 which are bent at ri as'shown in Figure 7 of the drawings, such t anglesextensions being ada ted to engage with the ol'iter teeth 17, 17 o the co rated edge of the guard mem r 8. The outer teeth 17 are preferably of .a depth somewhat less than. that of the remaining teeth 18'of the serrated indepthbaingmchaswill at.

nding serthe reduc ion aceommnd the extensions 16, 16 so that the same do not extend beyond the outer edges of the teeth 18. y

The guard member 8 as clearly shown in the drawings is curved, the surface 19 thereof remote from the handle 1 being convex. Th9 surface of the cooperating member 9 which cooperates with the convex surface 19 is concave to an extentcorresponding to the convexity of the-surface 19. The blade 7 is normally flat but is made of resilient steel so that it can readily be bent into a, curved formation when it is clamped between the members 8 and 9.

In assembling the razor the guard member 8 is located at the end of the handle 1 and the razor blade 7 is located between the guard member-and the cooperating member 9. The position of the razor blade'will be fixed as soon as the lugs 6 on the clamping member 4 engage within the perforations thereof and the adjustment of the razor is effected by moving the members 8 and 9 transversely of the blade' 7 prior to the tightening down of the clamping member. Correct adjustment is obtained when the in gner' sides of the extensions 16, 16 engage the cutting edge of the razor blade 7.

By such a construction as described it will be readily appreciated that the relative positions of the forward edges of the member 9, the guard member 8 and the blade 7, will always be the same no matter to what extent the width of the razor blade has been reduced by sharpening. Owing to the fact that the head 5 of the clamping member is of a relatively narrow width considerable latitude is allowed for the adjustment of the members 8 and 9 and thus allowance is made l has been ground down to such an extent that for aconsiderabl'e reduction in the width of the blade 7. When one side of the blade 7 the cutting ed e thereof does not project beyond the hea 5 the blade may be reversed and the opposite edge thereof used as a cuttin edge. lhat I claim is:

1. A safety razor comprising in combination a-handle, a guard member and a cooperating member adapted to clamp therebetween a resilent blade, and means for maintaining said clamping members in clamping position on said handle and for preventing movement of said blade relatively to said handle, said guard member and the coo erating member being adapted to be ad usted transversely of the blade whereby the blade 2. A safety razor as claimed in claim 1, in

may always be gripped by said clamping members in the same relatively position with respect to the cutting edge thereof, notwithstanding reduction in width of the blade due to sharpening.

which means are provided for preventing relative movement between the guard memher and the cooperating member.

.3. A safty razor comprising incombination a handle, a guard member and a cooperating member, adapted to clam a resilient blade 'therebetween and to grip such blade adjacent the cutting edge thereof, and a member extending longitudinally of the blade and of a width comparatively slight clamping member, such longitudinally extending member being adapted to maintain said clamping members in clamping position on said handle and to prevent movement of said blade relatively to said handle, said guard member and the cooperating member being adapted to be adjusted transversely of the blade, wherebythe blade may always be gripped by said clamping members in the same relative position with respect to the cutting edge thereof, notwithstanding the reduction in width of the blade due to sharpening.

4. A safety razor comprising in combination a handle, a guard member having a curved upper face, a member having a surface conforming with the curved upper face of the ardmember adapted to cooperate with respect to that of the cooperating with sald guard member to clamp a resilient tween a resilient blade, means for maintaining said clam ing members in clamping position on said handle and for preventing movement of said blade relatively to said handle, said guard member and the cooperating member being adapted to be adjusted transversely of the blade whereby the blade may always be gripped by said clamping members in the same relative position with respect to the cutting edge thereof. notwithstanding reduction in width of the blade due to sharpening, and means for correctly positioning said clamping members relatively to the cuttingedge of the blade.

Intestimony whereof I hereunto afiix my signature.

IBAFFAELE PIRO.

respect to the cutting edge thereof, 

